From the physiology of the embryo of the float
IN COPYRIGHTPopulárně vědecký snímek zachycuje mikrokinematografickou metodou vývoj embrya plovatky bahenní. Ve vajíčku se vytváří zárodek. Vzniká ulita. Zřetelně je vidět tlukot srdce. Popular scientific picture is by micro-cinematographic method depicting a great pond snail embryos evolution. In the egg is forming an embryo. The shell is being created. The heartbeat is evidently seen.
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